Longines · Conquest Classic

Strap for Conquest Classic Automatic 40 Stainless Steel / Black

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
ReferenceL2.785.4.56.6 (aka: L27854566)
FamilyConquest Classic
MovementLongines caliber L619.2 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Conquest Classic L2.785.4.56.6 (aka: L27854566)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Conquest Classic L2.785.4.56.6 (aka: L27854566), seen from the bench

The Conquest Classic uses the Longines L619.2 caliber with hour, minute, second and date indication. The movement offers essential functions for daily use in a classic three-hand configuration. The reference L2.785.4.56.6 is part of the Conquest collection dedicated to the brand's sporty-elegant watches.

Frequently asked questions

What is the lug width of the Longines Conquest Classic L2.785.4.56.6?

The lug width of the Longines Conquest Classic L2.785.4.56.6 is 20mm. This measurement represents the distance between the lugs on the case and is essential for selecting compatible straps. You can verify it using a digital calliper or by consulting the original documentation of your timepiece.

Which strap is recommended for the Longines Conquest Classic L2.785.4.56.6?

For the Conquest Classic L2.785.4.56.6, alligator leather or shell cordovan straps in vegetable tanning represent the classic choice, in cognac, dark brown, or black tones. For more sporty applications, consider fine-grained calf leather or high-density rubber straps. Your choice depends on your personal style and intended use.

How do I change the strap on my Longines Conquest Classic L2.785.4.56.6?

To change the strap, remove your watch and use a dedicated spring bar tool to push one of the pins securing the strap to the case inward. Once the pin retracts, the strap will detach. Repeat on the other side. To install the new strap, insert the pins into the lug holes until you feel them click into place. If you are inexperienced, Casati Milano offers professional installation.

Does the Longines Conquest Classic L2.785.4.56.6 accept compatible aftermarket straps?

Yes, the Conquest Classic L2.785.4.56.6 accepts aftermarket straps with a 20mm lug width. MilanoStraps offers a comprehensive collection of artisanal compatible straps, customisable in leather type, colour, size, and stitching thread. Always verify that the strap lug width matches the manufacturer's 20mm specification.

How long does a leather strap last on the Longines Conquest Classic L2.785.4.56.6?

A quality leather strap, such as one crafted from alligator or shell cordovan in vegetable tanning, can last 5-10 years or longer, depending on usage and maintenance. Factors such as humidity, frequency of wear, and sun exposure influence longevity. Artisanal straps from MilanoStraps include an 18-month warranty and can be periodically reconditioned to extend their useful life.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only